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VVORLD OIL CORP. <br /> QA1QC REPORT <br /> SAMPLE ID: 04231M4 PREPARATION DATE: 412412018 <br /> MATRIX: WATER ANALYSIS DATE: 4/24/2018 <br /> QC LIMITS <br /> COMPOUND N IETH0 PQL SR SA SSR %REC SSDR %REC %RPD RPD %REC LCS,TV LCS,AC %REC <br /> 1 ,1 -Dichloroethene 8260B 1 .0 ND 25 31 124 31 124 0 20.0 70-130 25 24 96 <br /> Benzene 8260B 1 .0 ND 25 28 112 28 112 0 2000 70A30 25 I 25 100 <br /> Trichloroethene 8260B 1 .0 ND 25 30 120 30 120 0 2000 70430 25 26 104 <br /> Toluene 8260B 1 .0 ND 25 29 116 28 112 4 2000 70-130 25 25 100 <br /> I ND 25 24 23 25 100 4 20.0 70130 25 22 88 <br /> lChlorobenzene 82606 1 .0 <br /> SAMPLE DF=500 <br /> ND= BELOW THE PQL <br /> %REC = (ISSR-SR)/SA)'100 SR = SAMPLE RESULT <br /> LCS = LABORATORY CONTROL SAMPLE SA = SPIKE ADDED <br /> SSR = SAMPLE SPIKE RESULT LCS ,TV = LAB CONTROL SAMPLE, TRUE VALUE <br /> SSDR = SAMPLE SPIKE DUPLICATE RESULT LCS ,AC = LAB CONTROL SAMPLE, ACTUAL VALUE <br /> RPD = RELATIVE PERCENT DIFFERENCE PQL = PRACTICAL QUANTITATION LIMIT <br /> CHECKED BY : DATE: g 16 t <br /> DATE: <br /> REVIEWED BY: 1 � RECEIVED <br /> DEC 10 2019 <br /> ENVIRONMENTAL <br /> o €ALTH DEPARTMENT <br />